{"id":13226,"date":"2020-08-22T21:47:03","date_gmt":"2020-08-22T18:47:03","guid":{"rendered":"https:\/\/www.plantmaster.ro\/?p=13226"},"modified":"2020-09-01T14:56:26","modified_gmt":"2020-09-01T11:56:26","slug":"tot-ce-trebuie-sa-stii-despre-cultura-de-porumb-recomandari-si-produse-pentru-ingrijire","status":"publish","type":"post","link":"https:\/\/www.plantmaster.ro\/blog\/agricultura\/tot-ce-trebuie-sa-stii-despre-cultura-de-porumb-recomandari-si-produse-pentru-ingrijire\/","title":{"rendered":"Tot ce trebuie s\u0103 \u0219tii despre cultura de porumb. Recomand\u0103ri \u0219i produse pentru \u00eengrijire"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Informa\u021bii generale despre cultura de porumb<\/h2>\n\n\n\n<p>Rom\u00e2nia este unul dintre cei mai mari produc\u0103tori de <strong><a href=\"https:\/\/www.plantmaster.ro\/categorie\/material-saditor\/seminte-cereale\/?filters=seminte-cereale[1549]\" target=\"_blank\" rel=\"noreferrer noopener\">porumb<\/a><\/strong> din Uniunea European\u0103. Este o plant\u0103 care se poate dovedi foarte profitabil\u0103, dac\u0103 se respect\u0103 anumite cerin\u021be legate de cultivarea \u0219i \u00eengrijirea culturii de porumb. Are o capacitate de produc\u021bie cu aproximativ 50% mai mare dec\u00e2t celelalte cereale. De asemenea, porumbul are \u0219i o arie larg\u0103 de r\u0103sp\u00e2ndire, deoarece este pu\u021bin influen\u021bat\u0103 de schimb\u0103rile climatice. \u00cen plus, porumbul are o rezisten\u021b\u0103 mare la ploi abundente, secet\u0103, boli \u0219i d\u0103un\u0103tori. Lucr\u0103rile agrotehnice \u0219i de recoltare \u00een cazul culturii de porumb pot fi mecanizate total.<\/p>\n\n\n\n<p>Porumbul se folose\u0219te at\u00e2t \u00een alimenta\u021bia uman\u0103, c\u00e2t \u0219i drept furaje pentru animale. De asemenea, poate fi utilizat pentru a ob\u021bine biocombustibili \u0219i celuloz\u0103, iar unele p\u0103r\u021bi ale platei, cum ar fi m\u0103tasea porumbului, se pot utiliza inclusiv \u00een scop medicinal.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Caracteristicile plantei de porumb<\/h3>\n\n\n\n<p>Tulpina porumbului este \u00eenalt\u0103, groas\u0103, neramificat\u0103 \u0219i are 9-12 internoduri. Are o \u00een\u0103l\u021bime care variaz\u0103 \u00eentre 30 \u0219i 700 cm, \u00eens\u0103 porumbul comercial are, \u00een general, o \u00een\u0103l\u021bime de 250 cm.<\/p>\n\n\n\n<p>Frunzele plantei de porumb sunt mai mari dec\u00e2t frunzele altor cereale p\u0103ioase, sunt dispuse alternativ pe tulpin\u0103, au teaca bine dezvoltat\u0103 \u0219i despicat\u0103 p\u00e2n\u0103 la baz\u0103. Atunci c\u00e2nd este secet\u0103, limbul se r\u0103suce\u0219te spre interior, pentru a-\u0219i m\u0103ri rezisten\u021ba la secet\u0103. Exist\u0103 o leg\u0103tur\u0103 str\u00e2ns\u0103 \u00eentre gradul de umiditate a solului, ritmul de formare a frunzelor, durata lor de via\u021b\u0103, productivitatea fotosintezei \u0219i m\u0103rimea recoltei porumbului. A\u0219adar, se poate spune c\u0103 frunzele porumbului sunt un indicator al productivit\u0103\u021bii acestei culturi.<\/p>\n\n\n\n<p>Porumbul are o inflorescen\u021b\u0103 unisexuat-monoic\u0103. Florile masculine apar cu 5-7 zile \u00eenaintea frunzelor feminine \u0219i sunt grupate \u00een inflorescen\u021be de forma unui panicul \u00een partea superioar\u0103 a tulpinii. Pe axul principal al paniculului se prind 10-40 de ramifica\u021bii laterale. Inflorescen\u021ba este complet protejat\u0103 de p\u0103nu\u0219i, care sunt tecile unor frunze modificate. La unele forme, acestea pot fi str\u00e2nse de \u0219tiulete, iar la altele, se desfac u\u0219or.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Diferen\u021ba dintre porumbul conven\u021bional \u0219i porumbul dulce<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"480\" src=\"https:\/\/www.plantmaster.ro\/wp-content\/uploads\/2020\/08\/sweet-corn-2687175_640.jpg\" alt=\"\" class=\"wp-image-13228\" srcset=\"https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/sweet-corn-2687175_640.jpg 640w, https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/sweet-corn-2687175_640-300x225.jpg 300w, https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/sweet-corn-2687175_640-600x450.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n\n<p>Exist\u0103 diverse grupe de variet\u0103\u021bi \u00een porumbul cultivat, iar cele mai cunoscute sunt porumbul conven\u021bional (furajer) \u0219i porumbul dulce (zaharat, pentru fiert). La noi \u00een \u021bar\u0103 se reg\u0103sesc mai multe variet\u0103\u021bi de porumb dulce, <em>Zea mays,<\/em> cum ar fi: amylacea, aorista, dentiformis, everta, indurata, saccharata.<\/p>\n\n\n\n<p>Iat\u0103 c\u00e2teva grupe de variet\u0103\u021bi de porumb \u0219i caracteristicile lor:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><em>Zea mays conv. Dentiformis <\/em>K\u00f6rn \u2013 este cunoscut \u0219i sub denumirea de <em>porumbul dinte de cal<\/em><\/li><li><em>Zea mays conv. indurata <\/em>(Sturt.) Bailey \u2013 are bobul tare \u0219i sticlos, rotunjit \u00een partea superioar\u0103, neted, lucios \u0219i dur<\/li><li><em>Zea mays conv. aorista <\/em>Grebensc. \u2013 este cunoscut \u0219i sub denumirea de porumb semisticlos \u0219i prezint\u0103 caracteristici intermediare dintre grupele <em>dentiformis <\/em>\u0219i <em>indurata<\/em><\/li><li><em>Zea mays conv. everta <\/em>Sturt. \u2013 este porumbul pentru floricele. Plantele au talie mic\u0103 \u0219i pot forma mai mul\u021bi \u0219tiule\u021bi pe plant\u0103<\/li><li><em>Zea mays conv. saccharata <\/em>Sturt. \u2013 este porumbul zaharat sau dulce, care se consum\u0103 fiert. Are boabele cu endospermul aproape \u00een \u00eentregime sticlos \u0219i cu gust dulce<\/li><li><em>Zea mays conv. amylacea <\/em>Bailey \u2013 este porumbul amidonos sau f\u0103inos, are boabele cu endospermul aproape \u00een \u00eentregime f\u0103inos \u0219i un con\u021binut de amidon de aproximativ 82%<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Cum se planteaz\u0103 porumbul<\/h2>\n\n\n\n<p>Porumbul este o plant\u0103 care suport\u0103 \u0219i monocultura, at\u00e2t timp c\u00e2t sunt aplicate \u00eengr\u0103\u0219\u0103minte minerale \u0219i organice. Totu\u0219i, se recomand\u0103 \u0219i rota\u021bia, pentru a nu se reduce con\u021binutul de humus \u0219i macroelemente din sol. A\u0219adar, de\u0219i monocultura este posibil\u0103 pe perioade \u00eendelungate, este recomandat\u0103 rota\u021bia culturilor, pentru a ob\u021bine o produc\u021bie optim\u0103.<\/p>\n\n\n\n<p>Ca plante premerg\u0103toare, se recomand\u0103 leguminoasele anuale pentru boabe \u0219i furajere, cerealele p\u0103ioase, inul, c\u00e2nepa, floarea-soarelui, cartoful, sfecla furajer\u0103 \u0219i sfecla de zah\u0103r. Se practic\u0103 \u0219i rota\u021bia gr\u00e2u-porumb, \u00eens\u0103 speciali\u0219tii recomand\u0103 ca aceast\u0103 rota\u021bie s\u0103 fie \u00eentrerupt\u0103 prin cultivarea unei alte plante.<\/p>\n\n\n\n<p>Lucerna nu se recomand\u0103 ca plant\u0103 premerg\u0103toare pentru porumb, \u00een special \u00een zonele secetoase, deoarece lucerna consum\u0103 mult\u0103 ap\u0103 \u0219i las\u0103 o rezerv\u0103 mic\u0103 \u00een sol pentru porumb. De asemenea, nu se recomand\u0103 cultivarea porumbului dup\u0103 sorg sau iarb\u0103 de Sudan.<\/p>\n\n\n\n<p>Porumbul este o plant\u0103 premerg\u0103toare bun\u0103 pentru culturile de prim\u0103var\u0103 \u0219i pentru gr\u00e2ul de toamn\u0103, dac\u0103 sunt cultiva\u021bi hibrizi cu o perioad\u0103 de vegeta\u021bie mai scurt\u0103.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Fertilizarea culturii de porumb<\/h3>\n\n\n\n<p>Cultura porumbului are nevoie de o cantitate mare de elemente nutritive. La 100 kg de boabe sunt necesare: 1,8-2,6 kg azot, 0,86-1,4 kg pentaoxid de fosfor, 2,4-3,6 kg oxid de potasiu. A\u0219adar, cultura porumbului are nevoie de fertilizare cu azot, fosfor \u0219i potasiu, iar cantit\u0103\u021bile necesare depind de soluri \u0219i de condi\u021biile de irigare.<\/p>\n\n\n\n<p>\u00cen ceea ce prive\u0219te dozele recomandate, acestea sunt dup\u0103 cum urmeaz\u0103:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Azot \u2013 90-200 kg\/ha<\/li><li>Fosfor \u2013 30-100 kg\/ha<\/li><li>Potasiu \u2013 440-80 kg\/ha<\/li><\/ul>\n\n\n\n<p>Pentru \u00eengr\u0103\u0219\u0103mintele foliare se recomand\u0103 1-2 administr\u0103ri. Prima se realizeaz\u0103 \u00een faza de 4-6 frunze, iar a doua, la un interval de aproximativ 2 s\u0103pt\u0103m\u00e2ni de la prima aplicare. Se utilizeaz\u0103 volume de solu\u021bie cuprinse \u00eentre 300-500 m<sup>3<\/sup>\/ha, cu o concentra\u021bie de 1-1,5%. Fertilizarea foliar\u0103 trebuie s\u0103 fie \u00eenso\u021bit\u0103 de combaterea chimic\u0103 a buruienilor \u0219i nu \u00eenlocuie\u0219te fertilizarea de baz\u0103 cu azot, fosfor \u0219i potasiu.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">S\u0103m\u00e2n\u021ba \u0219i sem\u0103natul porumbului<\/h3>\n\n\n\n<p>Cultivarea porumbului se face pe soluri af\u00e2nate \u00een profunzime, m\u0103run\u021bite la suprafa\u021b\u0103, cur\u0103\u021bate de buruieni \u0219i cu o rezerv\u0103 mare de ap\u0103. \u00cen func\u021bie de planta premerg\u0103toare, se face dezmiri\u0219tire, scarificare, ar\u0103tur\u0103 la ad\u00e2ncimi de p\u00e2n\u0103 la 28 de cm. Lucr\u0103rile minime presupun lucrarea solului cu grapa cu discuri sau af\u00e2narea solului cu cizelul, urmat\u0103 de lucrarea cu grapa cu discuri.<\/p>\n\n\n\n<p>Este recomandat tratamentul semin\u021belor de porumb \u00eenainte de sem\u0103nat. Astfel se evit\u0103 pagubele \u00een cultur\u0103, dezvoltarea \u0219i extinderea unor boli \u0219i d\u0103un\u0103tori. Acestea se trateaz\u0103 cu fungicide \u0219i cu insecticide. Pentru tratamentul porumbului se recomand\u0103 utilizarea produselor omologate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">C\u00e2nd se seam\u0103n\u0103 porumbul?<\/h3>\n\n\n\n<p>Ai preg\u0103tit s\u0103m\u00e2n\u021ba, dar nu \u0219tii c\u00e2nd se seam\u0103n\u0103 porumbul? Sem\u0103natul acestei culturi \u00eencepe atunci c\u00e2nd temperatura din sol este de 8\u00b0 C, iar vremea este \u00een curs de \u00eenc\u0103lzire. Epoca optim\u0103 pentru sem\u0103nat este cuprins\u0103 \u00eentre 1-20 aprilie \u00een C\u00e2mpia de Vest \u0219i C\u00e2mpia Rom\u00e2n\u0103, 15-30 aprilie \u00een centrul Transilvaniei \u0219i centrul Moldovei \u0219i 20-30 aprilie \u00een zonele submontane \u0219i \u00een nordul \u021b\u0103rii.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cum \u00eengrije\u0219ti cultura de porumb<\/h2>\n\n\n\n<p>\u00cen ceea ce prive\u0219te \u00eengrijirea culturii de porumb, principalele lucr\u0103ri de \u00eengrijire sunt cele care \u021bin de combaterea buruienilor. Acestea joac\u0103 un rol esen\u021bial \u00een ob\u021binerea unei produc\u021bii optime. Pentru combaterea buruienilor din cultura de porumb se fac erbicid\u0103ri. Tratamentele de protec\u021bie pentru cultura de porumb se aplic\u0103 pentru buruieni, boli \u0219i d\u0103un\u0103tori. Aceste tratamente implic\u0103 aplicarea de erbicide, fungicide \u0219i insecticide.<\/p>\n\n\n\n<p>Erbicidarea porumbului se realizeaz\u0103 prin stropirea cu produse <strong><a href=\"https:\/\/www.plantmaster.ro\/categorie\/erbicide\/\" target=\"_blank\" rel=\"noreferrer noopener\">erbicide<\/a><\/strong> cu aplicare preemergent\u0103 sau postemergent\u0103.<\/p>\n\n\n\n<p>Datorit\u0103 condi\u021biilor din \u021bara noastr\u0103, nu este o nevoie stringent\u0103 de aplicare a <strong><a href=\"https:\/\/www.plantmaster.ro\/categorie\/fungicide\/\" target=\"_blank\" rel=\"noreferrer noopener\">fungicidelor<\/a><\/strong> la cultura de porumb. Totu\u0219i, unele tratamente duc la o produc\u021bie mai mare \u0219i de calitate mai bun\u0103.<\/p>\n\n\n\n<p>Dac\u0103 s\u0103m\u00e2n\u021ba a fost tratat\u0103 corespunz\u0103tor, nu este necesar neap\u0103rat s\u0103 se aplice tratamente cu <strong><a href=\"https:\/\/www.plantmaster.ro\/categorie\/insecticide\/\" target=\"_blank\" rel=\"noreferrer noopener\">insecticide<\/a><\/strong>. Totu\u0219i, sunt situa\u021bii c\u00e2nd porumbul este atacat de viermi s\u00e2rm\u0103, g\u0103rg\u0103ri\u021ba frunzelor, sfredelitorul porumbului sau viermele vestic al r\u0103d\u0103cinilor de porumb. Pentru a combate atacul acestora, este recomandat s\u0103 se aplice tratamente cu substan\u021be active, cum ar fi thiametoxam, acetamiprid sau teflutrin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Irigarea culturii de porumb<\/h3>\n\n\n\n<p>Irigarea culturii de porumb este extrem de important\u0103 pentru a ob\u021bine o produc\u021bie de calitate bun\u0103. Cultura de porumb are nevoie de 3-4 irig\u0103ri, la intervale de 12-14 zile, cu norme de udare de 700-800 m<sup>3<\/sup>\/ha pe solurile cu permeabilitate bun\u0103, \u0219i 400-500 m<sup>3<\/sup>\/ha pe solurile cu permeabilitate mai redus\u0103.<\/p>\n\n\n\n<p>\u00cen prim\u0103verile secetoase s-ar putea s\u0103 fie necesar\u0103 o udare o udare de r\u0103s\u0103rire \u0219i se realizeaz\u0103 o irigare de 200-250 m<sup>3<\/sup>\/ha.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recoltarea \u0219i depozitarea porumbului<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" width=\"640\" height=\"425\" src=\"https:\/\/www.plantmaster.ro\/wp-content\/uploads\/2020\/08\/corn-1173816_640.jpg\" alt=\"\" class=\"wp-image-13229\" srcset=\"https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/corn-1173816_640.jpg 640w, https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/corn-1173816_640-300x199.jpg 300w, https:\/\/www.plantmaster.ro\/blog\/wp-content\/uploads\/2020\/08\/corn-1173816_640-600x398.jpg 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure><\/div>\n\n\n\n<p>Recoltarea porumbului se realizeaz\u0103 sub form\u0103 de boabe, mecanizat, la o umiditate a boabelor sunt 25%. Dup\u0103 recoltare, boabele trebuie s\u0103 fie uscate p\u00e2n\u0103 ajung la umiditatea de 14%. \u00cen cazul \u00een care recoltarea se face sub form\u0103 de boabe, pierderile trebuie s\u0103 fie sub 2,5%, gradul de v\u0103t\u0103mare a boabelor s\u0103 fie sub 8%, iar puritatea lor s\u0103 fie de peste 98%.<\/p>\n\n\n\n<p>Porumbul se depoziteaz\u0103 \u00een silozuri, la o umiditate mai mic\u0103 de 14%. Este la c\u0103utare porumbul care are o umiditate cuprins\u0103 \u00eentre 13-14% \u0219i cu un procent de boabe sparte de p\u00e2n\u0103 la 2%. Pentru a se ob\u021bine umiditatea porumbului care este cerut\u0103 de pia\u021b\u0103, sunt cazuri \u00een care se utilizeaz\u0103 echipamente speciale pentru uscare. \u00cen plus, pentru a p\u0103stra porumbul \u00een stare bun\u0103 \u00een depozit, pot fi utilizate diverse produse fitosanitare concepute special \u00een acest scop.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Concluzie<\/h2>\n\n\n\n<p>Porumbul este o plant\u0103 care se cultiv\u0103 la scar\u0103 larg\u0103 \u00een \u021bara noastr\u0103. Este utilizat at\u00e2t \u00een alimenta\u021bia uman\u0103, c\u00e2t \u0219i ca furaje pentru animale. De asemenea, are \u0219i alte utiliz\u0103ri. Pentru a avea o produc\u021bie de calitate, este necesar ca s\u0103m\u00e2n\u021ba s\u0103 fie tratat\u0103 corespunz\u0103tor, s\u0103 se respecte condi\u021biile de sem\u0103nat \u0219i s\u0103 se efectueze tratamentele de protec\u021bie, cum sunt aplicarea de erbicide, fungicide \u0219i insecticide.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Sursa foto: Pixabay<\/h5>\n","protected":false},"excerpt":{"rendered":"<p>Informa\u021bii generale despre cultura de porumb Rom\u00e2nia este unul dintre cei mai mari produc\u0103tori de porumb din Uniunea European\u0103. Este [&hellip;]<\/p>\n","protected":false},"author":37,"featured_media":13227,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1658,1655],"tags":[1751,1630,1788],"class_list":["post-13226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-agricultura","category-fermieri","tag-agricultor","tag-agricultura","tag-cereale"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tot ce trebuie s\u0103 \u0219tii despre cultura de porumb. 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