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1941年威尔肖在雪兰莪州的一个大椰园进行了施石灰以及施肥试验。他发现施石灰能使单果椰干重从0.34磅(1磅=0.4536公斤)增至0.59磅,施氮、磷、钾肥有同样效应,但增施磷、钾无甚效应。他还发现在重粘土地区,定植后33个月内施肥,对植后第10年的椰果产量无显著效应。但排水能增产,其增产幅度在统计学上不显著。据帕特森1967年报道,在霹雳州的大椰园,氮肥单独施用以及和其他肥分配合施用都能增产;镁石灰石粉单独施用以及和尿素配合施用也能增产。
Wellshaw conducted a lime and fertilization experiment in a large coconut palm tree in Selangor in 1941. He found that applying lime increased the weight of single coconut from 0.34 lbs (1 pound = 0.4536 kg) to 0.59 lbs. The same effect was observed for nitrogen, phosphorus and potassium fertilizers, but no significant effect was found for phosphorus and potassium. He also found that in heavy clay areas, fertilization within 33 months after planting had no significant effect on coconut production at the tenth year after planting. However, drainage can increase production, its increase rate is not statistically significant. According to Patterson’s 1967 report, nitrogen fertilizer alone and in combination with other fertilizers increased production in large coconut palm fields in Perak; magnesium limestone powder alone and in combination with urea also increased production.