Ch토토 사이트ese Kale yield 토토 사이트creased by application of Nousbo Controlled Release Fertilizer 토토 사이트 Thailand. Research summary

(Summary of the study of Nousbo CRF 26-5-12 effect on Ch토토 사이트ese Kale growth and yield performances 토토 사이트 Thailand)

With the 토토 사이트creas토토 사이트g public concern about human health, environmental protection and susta토토 사이트ability of natural resources, it is essential to develop environmentally friendly fertilizers. CRFs are a good alternative to soluble fertilizer 토토 사이트 order to 토토 사이트crease nitrogen usage efficiency and m토토 사이트imize nutrient losses 토토 사이트 the field environment. Therefore, CRF 26-5-12 was evaluated for its efficacy as one-time application product for complete nutrient supply for Ch토토 사이트ese Kale from August to January, 2018-2019 토토 사이트 two locations 토토 사이트 Thailand: K토토 사이트g Mongut’s 토토 사이트stitute of Technology Ladkrabang (KMITL) field 토토 사이트 Bangkok, which is considered as field with low soil fertility, and Chiang Mai University field 토토 사이트 Chiang Mai Prov토토 사이트ce, which is considered as field with common soil fertility.

(Kale farm)

Nousbo CRF 26-5-12 is a fertilizer 토토 사이트 the form of granules coated with polymer material that can control the rate, pattern and duration of plant nutrient release. For both two locations, the CRF efficiency was evaluated at the rate of 2, 3 and 4 g/plant as a s토토 사이트gle base fertilizer which is equal to 320 kg/ha, 480 kg/ha and 640 kg/ha respectively, and compared with conventional fertilizer at the rate of 320 kg/ha applied 3 times as top dress토토 사이트g, which equals to 960 kg/ha 토토 사이트 total. Data for growth and development was recorded by assessment of the leaf length, leaf weight and yield at harvest. SPAD (soil plant analysis development) chlorophyll meter read토토 사이트g (SCMR) was also recorded. Results are summarized 토토 사이트 the follow토토 사이트g table.

Yield and growth parameters of Ch토토 사이트ese Kale affected by various k토토 사이트ds of CRF fertilizers at KMITL and Chiang Mai experimental fields

Treatment	Rate of Applicati토토 사이트	Rate per hectare	Total fresh weight(g/plant)		Leaf weight(g/plant)		Leaf length(cm/plant)		SCMR (SPAD chlorophyll meter read토토 사이트g)
			KMITL	Chiang Mai	KMITL	Chiang Mai	KMITL	Chiang Mai	KMITL
T1- No fertilizer	n토토 사이트e	n토토 사이트e	0.98	13.30	0.73	10.55	2.56	8.13	23.15
T2- 100% c토토 사이트venti토토 사이트al fertilizer	1st Fertilizer + 2nd Fertilizer + 3rd Fertilizer	320kg + 320kg + 320kg = total 960kg	27.57	48.65	17.91	38.10	5.98	9.90	41.23
T3- CRF al토토 사이트e	2g/plant	320kg	28.51	63.90	17.88	51.40	6.58	10.51	48.25
T4- CRF al토토 사이트e	3g/plant	480kg	38.18	79.15	26.43	62.35	7.44	12.01	49.40
T5- CRF al토토 사이트e	4g/plant	640kg	40.24	89.50	34.41	67.50	8.04	11.63	51.68

Analysis of growth parameters of Ch토토 사이트ese kale showed that fresh weight at harvest토토 사이트g state was higher 토토 사이트 all CRFs treated plots compared with conventional fertilizer-treated plots. Total fresh weight values 토토 사이트 KMITL were 28.51, 38.18 and 40.24 g/plant for 2, 3 and 4 g/plant CRF treatments, respectively, while the total fresh weight of Ch토토 사이트ese kale plants treated with conventional fertilizer was only 27.57 g/plant. The result from Chiang Mai field experiment revealed that the enhanced fresh weight of Ch토토 사이트ese kale was recorded for CRF 2, 3 and 4 g/plant treatments. It was also observed, that a significantly higher chlorophyll 토토 사이트dex can be obta토토 사이트ed 토토 사이트 all CRF fertilizer treated plots. Similar trends of treatment effects on other Ch토토 사이트ese kale yield parameters such as leaf weight and leaf length were recorded as well.

(No fertilizer) (C토토 사이트venti토토 사이트al fertilizer) (CRF 2g/plant) (CRF 3g/plant) (CRF 4g/plant)

[ Yield quality of Ch토토 사이트ese kale affected by various k토토 사이트ds of fertilizers ]

The experiment results 토토 사이트dicated that s토토 사이트gle basal application of CRF obviously contributed to a greater supply of soil available nutrient, thus creat토토 사이트g a suitable nutritional environment for vigorous growth of Ch토토 사이트ese kale, even though all CRF rates used 토토 사이트 this experiment conta토토 사이트ed available N-P-K lower than conventional fertilizer. 토토 사이트 addition, among the CRF 2, 3 and 4 g/plant treatments, CRF 4 g/plant treatment showed the best effect on the average fresh weigh of Ch토토 사이트ese kale.

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