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Corn Crop Production: Growth, Fertilization and Yield by Arn T. Danforth

By Arn T. Danforth

Corn or maize is a crop that originated in Mexico and has unfold around the globe as an incredible nutrients crop. Sustainable construction of a corn box crop as grain corn for feed, meals and biofuels, in addition to candy corn for clean industry or processing, and as silage for prime power assets, calls for clinical administration of food in addition to a number of different crop administration practices corresponding to right plant inhabitants density, well timed seeding and harvesting, soil water, weeds and pests keep an eye on. Corn has develop into the key merchandise within the vitamin of many tropical humans, the most grain used for animal feed in temperate areas, in addition to new shares for plenty of different reasons together with lately used as feedstock for biofuels. speedy enlargement of grain established ethanol construction in North the US, has already triggered obstacle approximately destiny nutrition and feed provides. this significant ebook gathers the most recent learn from all over the world during this dynamic box.

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Additional resources for Corn Crop Production: Growth, Fertilization and Yield

Example text

Cerrato and Blackmer (1991) concluded that for grain yield, the critical N concentration in the leaf opposite or below the ear is not a sensitive indicator of N status. More importantly, in most cases, this is too late to correct the deficiency through in-season nutrients application. Table 12. 0 1 Maximum yield loss due to nutrients deficiency is expected with nutrient concentrations at or below the "critical" concentration. 2 Maximum normal concentrations are more than adequate but do not necessarily cause toxicities.

Yields of forage, percent P, and yield of P were greater when P was placed in contact with seeds than when it was either mixed or banded. Sanchez et al. (1991) compared the broadcast P as surface applied and disked into the soil before planting with banded P as applied about 3 cm below the corn seeds. Band placement reduced the amount of P required for specified sweet corn yield and also appeared to result in higher total yield. The relative efficacy of banded to broadcast P depended on soil test P level.

Wilhelm et al. (2004) observed that NO3concentration of the individual sample varied greatly from <100 to >8000 mg NO3--N kg-1 DM, and increased downwards the stalk from ear level to the aboveground level. Moreover, the range of NO3--N concentration for grain corn will not be applicable for sweet corn or silage corn because these crops are harvested earlier than the grain crop. Therefore, stalk N concentration will be higher prior to maturity. Similarly, N-dynamics in the soil such as mineralization, denitrification and leaching are not taken into account.

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