Estratégias de manejo agrícola podem melhorar a produção, especialmente em regiões com condições ambientais críticas para o desenvolvimento de culturas agrícolas, porém, em plantas como o abacaxizeiro, ainda carece de pesquisa aplicada para otimizar a produção e a qualidade dos frutos.  Este trabalho, teve como objetivo avaliar o desenvolvimento das plantas e a qualidade dos frutos do abacaxizeiro das cultivares Pérola e Vitória, submetidas a dois métodos de cultivo (com e sem mulching) e dois tipos de capina (química e manual). O experimento foi conduzido na Região Norte do Espírito Santo, em delineamento de blocos casualizados, esquema fatorial triplo 2x2x2, onde avaliaram-se as cultivares Pérola e Vitória, inclusão ou não de mulching e realização da capina química ou manual. As plantas foram avaliadas quanto ao desenvolvimento vegetativo, teores de macro e micronutrientes e índice SPAD na folha D. Foram avaliadas a firmeza, massa, comprimento, diâmetro central e características físico-químicas. Nas condições edafoclimáticas do experimento, a cultivar Pérola teve crescimento mais rápido, porém teor de sólidos solúveis baixo (12º Brix) em relação à ‘Vitória’, apresentando-se indiferente em relação ao tipo de capina e mulching. Já a cv. Vitória produziu frutos com maior firmeza e teor de sólidos solúveis de 16 ºBrix, com importantes incrementos com o uso de mulching e capina manual, destacando-se nas características físico-químicas relacionado a qualidade dos frutos, o que leva a recomendar -se o uso destas técnicas para seu cultivo na região Litoral Norte do Espírito Santo.

A of the ways to evaluate data homogeneity in experiments is through the coefficient of variation (CV), however, in orange fruit evaluations, gaps are noted about the ranges that the variables must present due to their fluctuations as a function of factors genetic, climatic and agricultural. Thus, the present work aims to propose classifications of coefficient of variation for physicochemical attributes of orange fruits. For this purpose, CVs of 42 articles were used, considering soluble solids (SS), titratable acidity (TA), soluble solids and titratable acidity ratio (SS/TA), fruit length (FL), fruit diameter (FD), fruit mass (FM) and juice yield (JY), applying descriptive statistics and the Shapiro Wilk normality test. The limits proposed as low CV for the physical-chemical attributes of total soluble solids, titratable acidity, the ratio of total soluble solids and titratable acidity, fruit length, fruit diameter, fruit mass, and juice yield are respectively 2.11; 4.39; 4.46; 2.27; 2.59; 4.71 and 1.99% while the high CV range corresponds in the same sequence to 9.61;15.02;15.12;8.99;9.69;19.39;16.34%.

The study aimed to evaluate the growth and quality of SJ-02 cocoa seedlings under different irrigation depths and cultivation container sizes. The experiment was arranged as a completely randomized design, in a factorial scheme (4x3), where the first factor consisted of the application of four different irrigation depths (6, 10, 12 and 14 mm d-1) and the second one was composed of three different cultivation containers (small, medium and large). Twelve treatments were evaluated with eight repetitions, totaling 96 plants in the experimental field. At 74 days after sowing, the leaf area, stem diameter, plant height, dry mass of the aerial part, dry mass of the root system, total dry mass and Dickson's quality index of all seedlings were analyzed. The 10.32 mm d-1 irrigation depth and the medium and large cultivation containers provided the highest quality in seedling production, being the most suitable ones. However, there was no interaction between the factors

The analysis of leaf pigments helps to understand the behavior of plant species under stress conditions. Thus, the objective of this study was to evaluate the amount of leaf pigments in SJ-02 cocoa seedlings under different irrigation depths and cultivation containers. The experiment took place at the Federal Institute of Espírito Santo, Campus Itapina, in Colatina, a city located in the northwest of the State of Espírito Santo, Brazil. A total of 144 seedlings were used, distributed in a completely randomized design, in a factorial scheme (6 × 3), where the first factor consisted of six different irrigation depths: 4; 6; 8; 10; 12 and 14 mm d-1 and the second one consisted of three different cultivation containers: polypropylene bags with dimensions of 10 × 20, 15 × 25 and 13 × 35, totalling 18 treatments, with eight repetitions. Seventy-four days after sowing, total chlorophyll content, flavonoid index and anthocyanin index were evaluated. There was no interaction between the factors studied. The 7 mm d-1 irrigation depth is the most suitable because it is practical in water management. Significance was not observed between the different cultivation containers.

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