51 

 amounts of fertilizer were side or topdressed once for 114 and MM crops, 

 but twice for HM crops during each crop cycle. 



Experimental design . A randomized "block design with a split- 

 plot arrangement and four replications was used. The four cropping 

 patterns were main plots within each block and the three fertilizer 

 levels were subplots. Each subplot measured 4 x 7 m and consisted of 

 three beds, 40 cm wide and 15 cm high, spaced 1.10 m apart. Land 

 preparation, planting practices, and pest and disease control were 

 based on recommended practices and methods reported by Palada et al. 

 (125) . 



Data collection . Yields were harvested from a 5-ni section of 

 the center bed. Bulb onion was hand-pulled, oven-dried at 80 G for 

 48 hours, and graded to sizes of large (diameter greater than 7 cm), 

 medium (5 to 7 cm) , and small (less than 5 cm) . Mature green marketable 

 pods of pole bean, southern pea, and English pea were picked two to 

 four times during each crop season. Marketable sq_uash were harvested 

 tliree times during the crop season. Tender leaves from the base of 

 Gollard plants were stripped four times during each season, whereas 

 mustard plants were cut slightly above the ground 38 days after seeding. 



Production costs and returns to management were based on 2-year 

 average prices of production inputs and market prices (150) at the time 

 of harvest. Return to m.anagement was calculated by subtracting total 



production costs from gross returns. Rates of return to labor, cash, 

 and fertilizer were calculated by deducting either labor, material, 

 or fertilizer costs from gross returns and dividing the difference by 



