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

By Arn T. Danforth

Corn or maize is a crop that originated in Mexico and has unfold world wide as an incredible nutrients crop. Sustainable creation of a corn box crop as grain corn for feed, nutrition and biofuels, in addition to candy corn for clean marketplace or processing, and as silage for prime power resources, calls for medical administration of nutrition besides a number of different crop administration practices comparable to right plant inhabitants density, well timed seeding and harvesting, soil water, weeds and pests keep watch over. Corn has develop into the foremost merchandise within the nutrition 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 creation in North the United States, has already triggered trouble approximately destiny nutrition and feed offers. this significant booklet gathers the newest study from worldwide during this dynamic box.

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2005). There is less time for leaching or denitrification losses when N is applied after plant emergence (Vetsch and Randall, 2004). Sainz Rozas et al. (2004) stated that higher NUE with economically competitive grain yields can be obtained when N is applied at the V6 stage because gaseous N losses are low and NO3--N leaching would be reduced. Split application of N fertilizers is generally found to be beneficial than a single application. , 2005a). The use of a sidedress application strategy remains one of the easiest and least expensive ways to maximize NUE.

D. Subedi and B. L. 3. Plant Tissue Analysis (Destructive Method) Destructive plant sampling is one of the commonly used indicators to assess crop N status during the crop growing season. Plant analysis has proven useful in confirming nutrient deficiencies, toxicities or imbalances, identifying “hidden hunger”, evaluating fertilizer programs, determining the availability of elements not tested for by other methods, and studying interactions among nutrients (Schulte and Kelling, 1999). Therefore, plant analysis is considered as a tool for troubleshooting crop problems.

This table gives a general guideline, but more accurate data are required from determinations by chemical analysis locally and frequently. The actual concentrations of nutrients in the small-scale subsistence farming vary greatly. For example, Lupwayi et al. (2000) reported in highland Ethiopia, that manure samples taken from experimental stations contain more N, P, K, Mg, Cu and Zn than those from smallholder farms, probably due to differences in feed availability and quality. Stored manures usually contain slightly higher N concentration than the same of fresh manures, probably because of loss of some carbon.

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