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Optimizing Row Spacing for Direct Seeded Aerobic Rice under Dry and Moist Fields

Optimizing Row Spacing for Direct Seeded Aerobic Rice under Dry and Moist Fields

Muhammad Ishfaq1*, Nadeem Akbar1, Imran Khan1, Shakeel Ahmad Anjum1, Usman Zulfiqar1, Muhammad Ahmad1, Mumtaz Ahmad2 and Muhammad Umer Chattha1 

1Department of Agronomy, University of Agriculture, Faisalabad-38040, Pakistan; 2Research and Development Officer, Engro Fertilizers, Seed Business, Pakistan.

[email protected]
 

Figure 1

a) Maximum, minimum and average temperature (ºC), b) Rainfall (mm), c) Relative humidity (%) and d) sunshine duration (h) over the growing period of direct seeded rice. 

Figure 2

Effect of soil moisture conditions at sowing and row spacing on (a, b) time to start emergence, (c, d) 50% emergence time, (e, f) mean emergence time and (g, h) final emergence count. 

Figure 3

Effect of row spacing under dry and moist field conditions on broad leaves weed density m-2 

Figure 4

Effect of row spacing under dry and moist field conditions on narrow leaves weed density m-2 

Figure 5

Effect of row spacing under dry and moist field conditions on biomass production (g) of weeds m-2 

Pakistan Journal of Agricultural Research

September

Vol.37, Iss. 3, Pages 190-319

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