Multiple Cropping with Trickle Irrigation1

Abstract

Pepper (Capsicum frutescens L.) and summer squash (Cucurbita pepo var. melopepo (L.) Alef.) were grown in immediate succession in undisturbed beds using trickle irrigation with various treatments. Highest combined yield in metric tons/ha for both crops was obtained with film mulch + soil fumigation (117.6) followed by film mulch (112.3), soil fumigation (93.4) and control (69.0), respectively. Yield from the second crop was negatively correlated (r=−.87) with the degree of plant infection with root-knot nematode (Meloidogyne incognita (Kofoid & White) Chitwood). Intensive production in this manner allows fixed costs to be defrayed over two crops thus increasing the magnitude of return per dollar invested. Multiple cropping of pepper and squash with trickle irrigation has an excellent potential in south Georgia provided nematodes and other soil-borne pathogens can be adequately controlled.

Tomato Production and Soil Pest Control in Relation to Width of Fumigated and Mulched Bed and Soil Fumigation Rate1

“…were determined by plating on Tsao ' s P l0V P medium (17) modified by adding 0.01 g/liter o f rose bengal to make colonies more visible, Fusarium spp. on Nash and Snyder' s medium (13) and Rhizoctonia solani using tablebeet seed as bait (15). Greenhouse bioassay tests in which nontreated tomato seeds were plant ed in the soil from the various treatments complemented the laboratory platings.…”

Effects of Nitrogen and Potassium Fertilization in Trickle Irrigation on Yield of Pepper and Polebean

“…Film mulch, high analysis fertilizer, and broad-spectrum soil fumigants in combination effectively increase yields of certain high value vegetables (1,4,5,8,9,10,12). Trickle irrigation with the intensive cultural practices of film 1 Received for publication December 28, 1977.…”

“…mulch and broad-spectrum soil fumiga tion has generally resulted in additional yield increases (2,3,4). Trickle irriga tion at frequent intervals usually increases yields of pepper and polebean compared to other types of irrigation (2,6,10). Trickle irrigation allows for frequent application of low levels of soluble nutrients to the root zone under the film mulch.…”

“…The integration of the low rate-high frequency application of N and K con cept using trickle irrigation with other cultural practices such as broadspectrum soil fumigation, film mulch and multiple cropping (4,5,8,9,10,12), will have a pronounced effect on our control over the plant's environ ment and subsequent productivity.…”