Results 271 to 280 of about 688,792 (314)

Growth Rate and % N of Field Grown Crops: Theory and Experiments

Annals of Botany, 1991
Mechanistic equations were developed to link the % N in plant dry matter to plant mass per unit area and to various expressions of growth rate. They were tested against the results of multi-harvest, multi-N-level fertilizer field experiments on French beans, potatoes, tall fescue and winter wheat.
Greenwood, D.J., Gastal, Francois, Draycott, A., Millard, Pierre, Neeteson, J.J., Lemaire, G.   +5 more
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Estimating Crop Growth Rate with Land Treatment

Journal of Environmental Engineering, 1984
A new and more comprehensive procedure for estimating crop growth rate is illustrated with data from the literature for coastal bermudagrass. Yield data are described by the Gaussian probability function. The effect of irrigation and harvest frequency is shown.
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Crop Growth Rate and Seeds per Unit Area in Soybean

Crop Science, 1991
The number of seeds per unit area is an important yield component in soybean [Glycine max (L.) Merr.]; however, the mechanisms responsible for the regulation of this yield component are not well understood. Field experiments were conducted at Lexington, KY (3 yr), and at Taian, China (1 yr), to investigate the relationship between net canopy ...
D. B. Egli, Yu Zhen‐wen
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Evaluating Management Zone Optimal Nitrogen Rates with a Crop Growth Model

Agronomy Journal, 2006
Determining MZ (management zone)‐specific optimal N rate is a challenge in precision crop management. The objective of this study was to evaluate the potential of applying a crop growth model to simulate corn (Zea mays L.) yield at various N levels in different MZs and estimate optimal N rates based on long‐term weather conditions.
Yuxin Miao, David J. Mulla, William D. Batchelor, Joel O. Paz, Pierre C. Robert, Matt Wiebers   +5 more
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Growth Rates and Cropping Pattern Changes in Himanchal Pradesh's Agriculture

Economic Journal of Nepal, 1985
Not Available. 
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Light and growth rate effects on crop and weed responses to nitrogen

Weed Science, 2004
The nitrogen (N) response of competing plants may be affected by photosynthetically active radiation (PAR) availability and maximum potential growth rate, which determine N requirements. The responses of two crop (corn and soybean) and six weed species (common lambsquarters, common waterhemp, giant foxtail, velvetleaf, wild mustard, and woolly cupgrass)
Matthew M. Harbur, Micheal D. K. Owen
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Continuous radial growth rate monitoring of horticultural crops using an optical mouse

Sensors and Actuators A: Physical, 2019
Abstract In this paper, a low-cost radial growth rate monitoring device has been presented for the horticultural crop. Its sensing mechanism is very simple and didn’t provide any obstacle towards the natural growth of the crops. In this prototype, a flexible paper tape is used to wrap the test object, where one end of the tape is fixed over the test ...
Subir Das, Shikha Nayak, Badal Chakraborty, Sabyasachi Mitra   +3 more
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A Dynamic Model of Crop Growth Rate of Italian Ryegrass after Cutting

Acta Agriculturae Scandinavica, 1973
(1973). A Dynamic Model of Crop Growth Rate of Italian Ryegrass after Cutting. Acta Agriculturae Scandinavica: Vol. 23, No. 2, pp. 121-126.
Veli Pohjonen, Perth Harp
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Growth rate of paddy crop in 27 districts of Chhattisgarh state

International Journal of Advanced Biochemistry Research Noosphere
The present study is conducted with a view to analyze growth rate of paddy crop in 27 districts of Chhattisgarh. For the purpose of study secondary data of area, production and productivity of paddy crop in 27 districts of Chhattisgarh state was downloaded from Directorate of Economics and Statistic, Department of Agriculture Ministry and Farmer ...
Sandhya Kumari, Deepika Unjan, Sandeep Kumar, Yogeshwari Sahu, Kajal Diwan   +4 more
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Pollen Tube Growth Rates in Zea mays : Implications for Genetic Improvement of Crops

Science, 1980
Speed of pollen tube growth is positively correlated with the quality of the resultant sporophytic generation. Therefore, gametophytic competition may be an important adaptive mechanism. Furthermore, pollen tube growth rates may be used to predict the quality of F 1 crosses in crop species.
E, Ottaviano, M, Sari-Gorla, D L, Mulcahy   +2 more
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