science

Ibn Bassal

Ibn Bassal is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Ibn Bassal rather than just read about it. In short: Ibn Bassal (Arabic: ابن بصال) was an 11th-century Andalusian Muslim botanist and agronomist in Toledo and Seville, Spain who wrote about horticulture and arboriculture. He is best known for his book on agronomy, the Dīwān al-filāha (An Anthology of Husbandry).

Key takeaways

Ibn Bassal belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Ibn Bassal to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Ibn Bassal from memory before moving on to harder problems.

Reference excerpt

Ibn Bassal (Arabic: ابن بصال) was an 11th-century Andalusian Muslim botanist and agronomist in Toledo and Seville, Spain who wrote about horticulture and arboriculture. He is best known for his book on agronomy, the Dīwān al-filāha (An Anthology of Husbandry).

Life and work

Ibn Bassal worked at the Abbadid dynasty court of Al-Mutamid, for whom he created the Hā’īṭ al-Sulṭān botanical garden in Seville. Originally from Toledo, Ibn Bassal moved to Seville after Alfonso VI conquered Toledo in 1085. He travelled (on pilgrimage) to the Hejaz, visiting Egypt, Sicily, Syria, and seemingly also countries from Abyssinia and Yemen to Iraq, Persia, and India. He returned with knowledge of the cultivation of cotton, and he may well have brought seeds and plants with him for the Toledo botanical garden. His book, 'Kitāb al-Kasd wa 'l-bayān' is primarily about horticulture. He is best known for his book on agronomy, the Dīwān al-filāha. He also wrote the treatise The Classification of Soils, which divided soil fertility into ten classifications.

The Dīwān al-filāha Ibn Bassal's magnum opus, his treatise on agronomy entitled Dīwān al-filāḥa (ديوان الفلاحة)(An Anthology of Husbandry), was originally a copious manuscript that had been dedicated to his botanical garden of Al-Ma’mūn at Toledo. His seminal work was subsequently abridged, during the author's lifetime, and made into a single volume, styled Kitāb al-qaṣd wa’l-bayān (The Book of Concision and Clarity). Although it had originally been compiled in Arabic, the work was later translated into Castilian in the 13th century, and many years later into Spanish. Ibn Bassal's practical and systematic book Dīwān al-filāha lacks references to other agronomists, and appears to be a record of his own experience. In the book, he describes over 180 cultivated plants, including chickpeas, beans, rice, peas, flax, henbane, sesame, cotton, safflower, saffron, poppies, henna, artichoke; herbs and spices including cumin, caraway, fennel, anise, and coriander; vegetables requiring irrigation or plentiful watering such as cucumbers, melons, mandrake, watermelons, pumpkins and squash, eggplant, asparagus, caper, and colocynth; the root vegetables carrots, radish, garlic, onion, leek, parsnip, the Sudanese pepper, and the dye-yielding madder; leaf vegetables including cabbage, cauliflower, spinach, purslane, amaranth, and chard. He also covers arboriculture, detailing the propagation of the palm, olive, pomegranate, quince, apple, fig, pear, cherry, apricot, plum, peach, almond, walnut, hazelnut, grape, citron, orange, pistachio, pine, cypress, chestnut, holm-oak, deciduous oak, tree of paradise, arbutus, elm and ash. He describes manure with straw or sweeping mixed in as mudaf, implying that it is not composed of only one material (animal dung) but is a mixture. The sweepings from hot baths included urine and human wastes, which Ibn Bassal describes as dry and salty, unsuitable for use as fertilizer unless mixed with other types of manure. Ibn Bassal gives two recipes for composting pigeon (hamam) and possibly donkey (himar) manure, though the translation is uncertain. Bassal says the excessive heat and moist qualities of pigeon dung works well for weaker and less hardy plants, especially those affected by cold temperatures. Human waste, on the other hand, Bassal advises using in hot temperatures because there is no heat to it. Pig dung, he cautions, will destroy pastures and poison plants, a view also shared by non-Arab writers like Columella and Cassianus Bassus. Compost made without manure is considered less desirable; Ibn Bassal calls this type muwallid, made with herbage, straw and grass, ashes from ovens, and water. Some of Bassal's text was copied by the Yemeni writers Al-Malik al-Afḍal.

Legacy Ibn Bassal's works were studied several centuries later by Abu Jafar Ahmad Ibn Luyūn al-Tujjbi (d.1349) of Almeria who based his treatise Kitāb Ibdā' al-malāha wa-inhā' al-rajāha fī usūl sinā'at al-filāha on Bassal's work.

Worked examples

Example 1 — a first encounter with Ibn Bassal

Start with the simplest possible case. Write down what Ibn Bassal claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Ibn Bassal before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Ibn Bassal ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Ibn Bassal

In research: Ibn Bassal appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Ibn Bassal in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Ibn Bassal is common in secondary-school and first-year university syllabi. It links to neighbouring topics 11th-century Arab people, 11th-century agronomists, 11th-century people from al-Andalus, so understanding it makes those chapters shorter.
In everyday life: Look for Ibn Bassal outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Ibn Bassal in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Ibn Bassal means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Ibn Bassal out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Ibn Bassal in simple terms?

Why does Ibn Bassal matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Ibn Bassal?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Ibn Bassal.