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Studies on year round production of cauliflower (Brassica oleracea var botrytis) under mid hills of Himachal Pradesh
The cauliflower (Brassica oleracea var botrytis L.) has received increased interest due to its high price and high demand. The study aimed to assess the effect of planting time and plant spacing on the growth and yield of cauliflower plants intercropped with sweet corn under high-temperature conditions in Central Kalimantan, Indonesia. The main plot consisted of three different sweet corn planting times: four weeks before cauliflower planting, two weeks before cauliflower planting and simultaneous planting with cauliflower. In the sub-plots three different plant spacing distances were used for sweet corn: J1 = 60 cm, J2 = 30 cm and J3 = 20 cm. Variables analyzed in this study were air temperature, leaf area, plant dry weight, curd weight, curd diameter and curd yield. Results showed that planting sweet corn two weeks before transplanting the cauliflower and the J1 distance gave an air temperature, in the cauliflower plant canopy, suitable for leaf area growth and an increase in both plant dry weight and cauliflower curd yield (4.18 y 5.07 t·ha-1).
A study was made of the relationship between the times of curd initiation and curd maturity of plants of 32 crops of summer and autumn cauliflowers in 1965 and 60 crops in 1966. By the use of a dissection technique, the relationship between curd growth and accumulated temperature was established and, by using final leaf number per plant as a distinguishable “marker”, it was possible to estimate the variability in times of curd initiation of plants within each crop. It was found that the lengths of the maturity periods of crops were related to the lengths of their curd initiation periods, and this suggests that environmental factors operating before curd initiation occurs can influence the maturity characteristics of crops.