Latest Research News on yield of corn : Apr 2022

Rotational Cropping Sequence Affects Yield of Corn and Soybean

There are numerous reports of the beneficial effects of rotating corn (Zea mays L.) and soybean [Glycine max (L.) Merr.]. However, few studies have been specifically designed to document the important corn-soybean rotation effect. The objective of this study was to determine the impact of various corn and soybean cropping patterns on the yield of both crops. The 9-year field study conducted at two locations was managed for maximum production. Cropping sequences consisted of: continuous monoculture with the same cultivar; continuous monoculture with cultivars alternated; annual rotation of the two crops; and 1, 2, 3, 4, and 5 yr of monoculture following 5 yr of the other crop. Annually rotated corn yielded 10% better, and first-year corn yielded 15% better than corn under monoculture. Annually rotated soybean yielded 8% better, and first year soybean yielded 17% better than soybean under monoculture. With monoculture of either crop, alternating two different cultivars annually resulted in the same yield as continuous cropping of just one cultivar. There were differences in the response of the two crops to increasing years of monoculture: the lowest corn yield was from second year corn; the lowest soybean yield was from extended monoculture. Total corn dry weight was affected by cropping sequence but soybean dry weight was not. Our data suggest that, from a yield standpoint, a superior cropping sequence for Minnesota would include at least three, and possibly more crops. [1]

Planting Patterns and Radiation Interception, Plant Nutrient Concentration, and Yield in Corn

The upper leaves of corn (Zea mays L.) are radiation-saturated while the lower leaves, the prime source of carbohydrates for nutrient uptake by roots, are radiation-starved. This study was conducted to determine the degree to which planting patterns could influence radiation interception by layers in the canopy, plant nutrient concentration, and yield in corn. Corn was planted in the field in a high-yielding environment on a Drummer silty clay loam (finesilty), mixed, mesic, Typic Haplaquoll) in 0.38 m single rows, 0.76 m twin rows, 0.76 m single rows, 1.14 m twin rows, and 1.52 m twin rows with 0.13 m between pairs of twin rows. Interception of solar radiation shortly after silking was generally similar for all the planting patterns except for the 1.52 m twin row spacing which intercepted 10% more incident radiation with lower rather than upper leaves compared to the other planting patterns 3 h before solar noon, but allowed 7% more incident radiation to strike the soil surface compared to the narrow row spacings (0.38 – 0.76 m) at solar noon. Planting pattern had no consistent effect on nutrient concentration in the grain, stover, or cob. Grain yields averaged 9.7 Mg ha−1 for the 1.52 m twin planting pattern and 11.7 Mg ha−1 for the other planting patterns. In conclusion, wide row spacings resulted in a partial redistribution of radiation from the upper to the lower leaves but allowed more radiation to strike the soil surface, did not affect plant nutrient concentration, and decreased yield. [2]

Effect of Ethrel on Growth and Yield of Corn

Ethrel sprayed on corn plants at three rates and at several stages of development caused a reduction in plant height, leaf area, leaf efficiency, and yield of grain as compared to untreated plants. No beneficial effects were observed from the use of this chemical on corn under the conditions of this experiment. [3]

Influence of Integrated Nutrient Management on Growth and Yield of Sweet Corn (Zea mays L. saccharata) under Temperate Conditions of Kashmir Valley

The growth and yield response of sweet maize (Zea mays (L.) saccharata) to varying levels of organic and inorganic fertilizers during the growing seasons of kharif 2010 and 2011 was studied under temperate conditions of Kashmir Valley. Twelve treatments comprising of sole and combination of organic and inorganic fertilizers were laid in a randomized block design with three replications. The results revealed that application of T10 [75% (NPK) + FYM (4.5 t/ha) + Biofertilizer (Azotobacter + Phosphate solubilizing bacteria (PSB))] significantly increased the number of days taken to tasseling, silking and milky stages and various other growth characters viz., plant height, leaf area index and dry matter accumulation at 15 days interval from sowing upto harvest and crop growth rate and relative growth rate at 7 days interval from 15 DAS upto harvest whereas, the lowest values of these parameters were recorded in unfertilized control. The treatment T10[75 % (NPK) + FYM (4.5 t/ha) + Biofertilizer (Azotobacter + Phosphate solubilizing bacteria (PSB))] proved to be significantly superior to rest of the treatments including unfertilized control in increasing cob yield with and without husk, fodder yield and green biomass yield during both years of experimentation, however, ratio of cob to fodder yield during 2011 and 2012 were recorded highest in treatment T3 [FYM (18 t ha-1)] and T2 [Recommended NPK kg ha-1 (90:60:40)], respectively, whereas unfertilized control recorded the lowest ratio of cob to fodder yield. [4]

Corn-Soybean Association and Its Response to Cow Manure under Drip Irrigation

Aims: The work was established with objective of evaluating organic fertilizer doses and its effects on soil physical properties and forage yield. Thus, solarized manure and corn variety were used.

Study Design: Randomized strip-split plot design with three replications.

Place and Duration of study: The experiment was conducted during 2007 and 2008; in the experimental agricultural center of the Agriculture and Zootechnic Collage of Durango University, located at km 28 of Gómez Palacio-Tlahualilo road, Durango, Mexico. Planting was carried out on April 15, 2007 and June 2, 2008.

Methodology: The first factor (A) studies was crop with the levels: A1; corn, variety San Lorenzo and A2; combination corn-soybean with the same variety for corn and Cajeme for soybean, the second factor was cow manure with the levels of B1 to B5 of 0, 40, 80, 120 and 160 Mg ha-1 and one additional level of chemical fertilizer of 100-150-0 of nitrogen phosphorus and potassium, respectively; The main evaluated variables were: soil temperature (°C), soil moisture (%) and Green forage yield (Mg ha-1).

Results: The results indicate no statistical difference between factor (A) levels; but in factor B statistical differences among levels were found and the best was 120 Mg ha-1 with a production yield of 67.22 and 71.60 Mg ha-1 in 2007 and 2008 respectively. The treatments with cow manure application always had the highest, soil moisture percentages and lower temperatures in compare with treatments without cow manure application, outstanding the 120 and 160 Mg ha-1 treatments.

Conclusion: Organic fertilizers have a positive effect on physical soil characteristics and forage yield; being a good alternative for farmer in forage corn production.[5]


[1] Crookston, R.K., Kurle, J.E., Copeland, P.J., Ford, J.H. and Lueschen, W.E., 1991. Rotational cropping sequence affects yield of corn and soybean. Agronomy Journal, 83(1), pp.108-113.

[2] Ottman, M.J. and Welch, L.F., 1989. Planting patterns and radiation interception, plant nutrient concentration, and yield in corn. Agronomy Journal, 81(2), pp.167-174.

[3] Earley, E.B. and Slife, F.W., 1969. Effect of ethrel on growth and yield of corn. Agronomy journal, 61(5), pp.821-823.

[4] Rasool, S., Kanth, R.H., Hamid, S., Raja, W., Alie, B.A. and Dar, Z.A., 2015. Influence of Integrated nutrient management on growth and yield of sweet corn (Zea mays L. Saccharata) under temperate conditions of Kashmir valley. Journal of Experimental Agriculture International, pp.315-325.

[5] López-Martínez, J.D., Salazar-Meléndez, E., Trejo-Escareño, H.I., Salazar-Sosa, E., Luna-Anguiano, J. and Vázquez-Vazquez, C., 2013. Corn-Soybean Association and Its Response to Cow Manure under Drip Irrigation. Journal of Experimental Agriculture International, pp.14-24.

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