Spring planting favors yield of new Brazilian potato cultivar BRS F63 Camila

Eschemback, Vlandiney; Kawakami, Jackson; Genú, Aline M; Anderle, Leonardo Z

doi:10.1590/S0102-053620190409

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Research • Hortic. Bras. 37 (4) • Oct-Dec 2019 • https://doi.org/10.1590/S0102-053620190409 copy

Spring planting favors yield of new Brazilian potato cultivar BRS F63 Camila

Plantio de primavera favorece produtividade de nova cultivar de batata brasileira BRS F63 Camila

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

The objective of this work was to evaluate the effect of different planting dates on the morphological variables and yield of new potato cultivars. The treatments were three cultivars (Agata, BRS Clara and BRS F63 Camila) and three planting date (October, December and February), carried out in two crop years (2014/15 and 2015/16). Total and marketable yields, average mass of total and marketable tubers, growth period, leaf area index, number and dry weight of the tubers were evaluated. The first planting date resulted in higher yield than the third date. Cultivar BRS F63 Camila was the one with highest yield in this first planting date (47.4 t ha^-1), due to greater number of tubers produced in relation to the other cultivars and to higher average tuber weight (166 g tuber^-1) in relation to Agata (113 g tuber^-1). In the second planting date, no difference in yield was observed among cultivars. In the third planting date, BRS Clara was the cultivar with highest yield (21.3 t ha^-1), due mainly to higher average weight of tubers (105 g tuber^-1) in relation to Agata (49 g tuber^-1), a fact favored by the higher leaf area index and longer growth period of BRS Clara. Depending on the planting date, one should choose the cultivar that results in maximum yield potential, since it is a plant management with low cost and high yield impact. For the second planting date, any of the studied cultivars can be used.

Keywords:
Solanum tuberosum; planting date; tuber yield; zoning

P-value	Year (Y)	Cultivar (C)	Y x C	CV1 (%)	Date (D)	D x Y	D x C	D x Y x C	CV2 (%)
TY (kg ha^-1)	0.030	0.016	0.260	11.9	<0.001	0.067	0.011	0.904	18.1
MY (kg ha^-1)	0.059	0.007	0.234	14.1	<0.001	0.023	0.015	0.750	19.5
TNT (m²)	0.041	<0.001	0.829	9.2	<0.001	0.661	0.003	0.578	14.6
NMT (m²)	0.352	0.868	0.345	16.1	<0.001	0.435	<0.001	0.515	14.4
AWTT (g tuber^-1)	0.997	0.002	0.211	15.2	<0.001	0.003	0.045	0.084	15.9
AWMT (g tuber^-1)	0.091	0.001	0.241	12.0	<0.001	0.120	0.041	0.243	13.7
PG (DAE)	0.081	<0.001	0.826	0.7	<0.001	0.819	<0.001	0.940	2.5
LAI (15 DAE)	0.324	0.569	0.335	37.3	<0.001	<0.001	0.220	0.350	24.5
LAI (30 DAE)	0.009	0.032	0.756	26.7	<0.001	<0.001	0.064	0.452	34.0
LAI (45 DAE)	0.118	<0.001	0.539	41.5	<0.001	0.140	<0.001	0.310	43.6
LAI (60 DAE)	0.028	<0.001	0.139	42.7	<0.001	0.364	<0.001	0.061	40.4
NTF (15 DAE)	0.009	0.021	0.104	23.3	<0.001	0.464	0.189	0.774	38.2
NTF (30 DAE)	0.497	0.004	0.502	14.9	0.179	0.083	0.046	0.724	24.1
NTF (45 DAE)	0.038	0.048	0.667	31.2	0.682	0.012	0.467	0.646	30.1
NTF (60 DAE)	0.176	0.019	0.172	16.3	0.081	0.577	0.084	0.975	31.8
DWT (15 DAE)	0.048	0.276	0.843	27.1	<0.001	<0.001	0.132	0.260	24.9
DWT (30 DAE)	0.019	0.070	0.131	23.3	<0.001	0.491	0.156	0.768	26.8
DWT (45 DAE)	0.062	0.027	0.395	5.6	<0.001	0.057	0.044	0.005	5.4
DWT (60 DAE)	0.640	0.002	0.839	2.3	<0.001	0.969	0.048	0.967	4.3

Associação Brasileira de Horticultura Embrapa Hortaliças, C. Postal 218, 70275-970 Brasília-DF, Tel. (61) 3385 9099, Tel. (81) 3320 6064, www.abhorticultura.com.br - Vitoria da Conquista - BA - Brazil
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[TFN1] ¹
Total yield (TY), marketable yield (MY), total number of tubers (TNT), number of marketable tubers (NMT), average weight of total tuber (AWTT), average weight of marketable tubers (AWMT),growth period (GP), leaf area index (LAI), number of formed tubers (NFT), dry weight of tubers (DWT) and coefficient of variation(CV).