Field evaluation of granular urea as nitrogen source for pepper

Khazanah I., . and M. Khanif Y., . and Ahmad Husni M. H., . (1997) Field evaluation of granular urea as nitrogen source for pepper. [Proceedings Paper]

In pepper production N is often applied as compound fertilizer together with other nutrients. A field study was conducted at Saratau and Serian in Sarawak to evaluate the performance of granular urea as N source. The treatments--studied were NPK mixture with urea NPK mixture with ammonium sulphate and -compound fertilizer. We used the rates and timing of fertilizer application as recoIlUItended by the Department of Agriculture. The plots consisted of matured vines in farms_ rented from the local farmers. The experiment was laid out in a randomised complete block design RCBD with four replications. Each block consisted of 16 vines. To avoid border effects soil and plant sampling were carried out in the middle of the block consisting of 4 vines. The soil were analysed for total-N N03-N and NH4-N. The treatments with different N sources did not have any significant effect on tissue N soil Nand N03-N. The interaction between treatments and these parameters were also not significant. The soil ammonium-N however was significantly affected by the treatments in the Serian plots. The results indicated that soil ammonium N ofplots treated with compound fertilizer had lower ammonium-N compared to plots treated with urea and ammonium sulphate mixtures. The effects of the treatments on yield were different between the two locations. In the Serian plots dry matter yield was higher in the plots treated with urea as compared to compound fertilizer or mixture with ammonium sulphate. The effects of the treatments on the yield however was not significant in the Saratau plots. Thus we conclude that the use of urea as ;N source for pepper production is agronomically as effective as compound fertiliet and ammonium sulphate.

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Abstract

In pepper production N is often applied as compound fertilizer together with other nutrients. A field study was conducted at Saratau and Serian in Sarawak to evaluate the performance of granular urea as N source. The treatments--studied were NPK mixture with urea NPK mixture with ammonium sulphate and -compound fertilizer. We used the rates and timing of fertilizer application as recoIlUItended by the Department of Agriculture. The plots consisted of matured vines in farms_ rented from the local farmers. The experiment was laid out in a randomised complete block design RCBD with four replications. Each block consisted of 16 vines. To avoid border effects soil and plant sampling were carried out in the middle of the block consisting of 4 vines. The soil were analysed for total-N N03-N and NH4-N. The treatments with different N sources did not have any significant effect on tissue N soil Nand N03-N. The interaction between treatments and these parameters were also not significant. The soil ammonium-N however was significantly affected by the treatments in the Serian plots. The results indicated that soil ammonium N ofplots treated with compound fertilizer had lower ammonium-N compared to plots treated with urea and ammonium sulphate mixtures. The effects of the treatments on yield were different between the two locations. In the Serian plots dry matter yield was higher in the plots treated with urea as compared to compound fertilizer or mixture with ammonium sulphate. The effects of the treatments on the yield however was not significant in the Saratau plots. Thus we conclude that the use of urea as ;N source for pepper production is agronomically as effective as compound fertiliet and ammonium sulphate.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal S 590.2 S683 1997 Call Number
AGROVOC Term:	Pepper
AGROVOC Term:	Compound fertilizers
AGROVOC Term:	Farmers
AGROVOC Term:	Farms
AGROVOC Term:	Soil sampling
AGROVOC Term:	Dry matter content
AGROVOC Term:	Ammonium sulphate
AGROVOC Term:	Urea
AGROVOC Term:	Yields
AGROVOC Term:	Soil nutrient content
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/12169

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