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Calamansi, Citrus x microcarpa, is a shrub or small tree growing to 3–6 m (10–20 ft). The plant is characterized by wing-like appendages on the leaf petioles and white or purplish flowers. The fruit of the calamansi resembles a small, round lime, usually 25–35 mm (1– 1 + 3 ⁄ 8 in) in diameter, but sometimes up to 45 mm (1 + 3 ⁄ 4 in).
In 1972–1973, Philippines was beset by rice production shortfalls resulting from the series of typhoons and floods and fertilizer shortages spawned by the oil crisis.The resulting fourfold drop in rice production prompted the government to directly intervene in the operations of the fertilizer industry through the issuance of Presidential Decree (P.D.)
Citrus production is often cut short in many areas by outbreaks of bacteria known as Xanthomonas axonopodis, or citrus canker, which cause unsightly lesions on all parts of the plant, affecting tree vitality and early drop of fruit. While not harmful to human consumption, the fruit becomes too unsightly to be sold, and entire orchards are often ...
The fruit is a hesperidium, a specialised berry with multiple carpels, globose to elongated, [26] [27] 4–30 cm (1.6–11.8 in) long and 4–20 cm (1.6–7.9 in) diameter, with a leathery rind or "peel" called a pericarp. The outermost layer of the pericarp is an "exocarp" called the flavedo, commonly referred to as the zest. The middle layer ...
So, for example, an 18−51−20 fertilizer contains by weight 18% elemental nitrogen, 0.436 × 51 = 22% elemental phosphorus, and; 0.83 × 20 = 17% elemental potassium. As another example, the fertilizer sylvite is a naturally occurring mineral consisting mostly of potassium chloride, KCl.
A double graft union of diamante citron upon sour orange rootstock. Sour orange: the only rootstock that truly is an orange (the Citrus × aurantium or bitter orange). It is vigorous and highly drought-resistant. Poncirus trifoliata: a close relative of the genus Citrus, sometimes classified as Citrus trifoliata.
Maclura pomifera, commonly known as the Osage orange (/ ˈ oʊ s eɪ dʒ / OH-sayj), is a small deciduous tree or large shrub, native to the south-central United States. It typically grows about 8 to 15 metres (30–50 ft) tall.
Pittosporum undulatum Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Asterids Order: Apiales Family: Pittosporaceae Genus: Pittosporum Species: P. undulatum Binomial name Pittosporum undulatum Vent. Pittosporum undulatum is a fast-growing tree in the family Pittosporaceae. It is sometimes also known as sweet pittosporum, native daphne ...